<script setup lang="ts">
import {onMounted, ref} from 'vue'
import {getCategoryFilterAPI, getSubCategoryAPI} from '@/apis/category'
import {useRoute} from "vue-router";
import GoodsItem from "@/views/Home/components/GoodsItem.vue";
import type {TabsPaneContext} from "element-plus";

const route = useRoute();
// 接收路由参数 id
const {id} = route.params;

const categoryData = ref({})

const getCategoryFilter = async (id) => {
  const res = await getCategoryFilterAPI(id)
  // console.log(res.result)
  categoryData.value = res.result
}

onMounted(() => getCategoryFilter(id))

const reqData = ref({
  categoryId: id,
  page: 1,
  pageSize: 20,
  sortField: 'publishTime'
})
const goodList = ref([])

const getGoodList = async () => {
  const res = await getSubCategoryAPI(reqData.value)
  // console.log(res.result)
  goodList.value = res.result.items
}
onMounted(() => getGoodList())

// 标签页tab切换回调
const tabChange = (tab: TabsPaneContext, event: Event) => {
  // console.log(tab, event)
  // console.log('tab切换了', reqData.value.sortField)
  reqData.value.page = 1  // 重置页数
  getGoodList()
}

const disabled = ref(false)
// 加载更多
const load = async () => {
  console.log('到达底部，加载更多')
  // 获取下一页的数据
  reqData.value.page++
  const res = await getSubCategoryAPI(reqData.value)
  // 新老数据拼接
  goodList.value = [...goodList.value, ...res.result.items]

  // 加载完毕 停止监听
  if (res.result.items.length === 0) {
    console.log('没有更多数据了')
    disabled.value = true
  }
}
</script>

<template>
  <div class="container">
    <!-- 面包屑 -->
    <div class="bread-container">
      <el-breadcrumb separator=">">
        <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item :to="{path: `/category/${categoryData.parentId}`}">{{
            categoryData.parentName
          }}
        </el-breadcrumb-item>
        <el-breadcrumb-item>{{ categoryData.name }}</el-breadcrumb-item>
      </el-breadcrumb>
    </div>
    <div class="sub-container">
      <!-- 标签页 -->
      <el-tabs v-model="reqData.sortField" @tab-change="tabChange">
        <el-tab-pane label="最新商品" name="publishTime"></el-tab-pane>
        <el-tab-pane label="最高人气" name="orderNum"></el-tab-pane>
        <el-tab-pane label="评论最多" name="evaluateNum"></el-tab-pane>
      </el-tabs>
      <div class="body" v-infinite-scroll="load" :infinite-scroll-disabled="disabled">
        <!-- 商品列表-->
        <GoodsItem v-for="good in goodList" :goods="good" :key="good.id"/>
      </div>
    </div>
  </div>
</template>

<style scoped lang="scss">
.bread-container {
  padding: 25px 0;
  color: #666;
}

.sub-container {
  padding: 20px 10px;
  background-color: #fff;

  .body {
    display: flex;
    flex-wrap: wrap;
    padding: 0 10px;
  }

  .goods-item {
    display: block;
    width: 220px;
    margin-right: 20px;
    padding: 20px 30px;
    text-align: center;

    img {
      width: 160px;
      height: 160px;
    }

    p {
      padding-top: 10px;
    }

    .name {
      font-size: 16px;
    }

    .desc {
      color: #999;
      height: 29px;
    }

    .price {
      color: $priceColor;
      font-size: 20px;
    }
  }

  .pagination-container {
    margin-top: 20px;
    display: flex;
    justify-content: center;
  }
}
</style>